Pleskit and Tim are the butt of the joke in this eleventh book in the hilarious, fast-paced, and accessible sci-fi series Sixth-Grade Alien from the bestselling author of Aliens Ate My Homework, Bruce Coville!

When Tim comes home and finds a two-foot-tall orange alien named Beebo Frimbat sitting on his desk, he knows hes in for a hard time. After all, Beebo is a dedicated mischief maker who thinks trouble is the spice of life. But even Beebos past pranks dont prepare Tim for finding his underwear flying from the school flagpole.

Still, its all in good fun. Or is it? Do Beebos pranks have anything to do with the plan to derail the mission of The Fatherly One? And is it really just an accident when Beebo locks Pleskits bodyguard in an alternate dimension populated by man-eating monsters?

Previously titled Theres an Alien in My Underwear.